A “massive fish kill” is being investigated after hundreds of fish were found dead at a lake in Britain. Hundreds of fish were discovered floating on the surface of Hogganfield Loch in Glasgow, Scotland, on Thursday. Experts believe the fish came from a tunnel with water that flows in from nearby Frankfield Loch, reports Glasgow Live.

Also known as a culvert, the tunnel is used to carry steams or drain water under roads and railways.

The Scottish Environmental Protection Agency (SEPA) confirmed it is currently investigating the incident.

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